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  1. or download this
    sub invoke_static {
        my ($class, $method, @args) = @_;
    ...
        local *{$class};
        $class->$method(@args);
    }
    
  2. or download this
    sub safe_from_evil_filehandles(&) {
        my ($cb) = @_;
    ...
        };
        return $localizer->();
    }